toloframework/gh-pages/js/polyfill.mathml.js

Javascript/HTML/CSS compiler for Firefox OS or nodewebkit apps using modules in the nodejs style.

/** @module polyfill.mathml */require( 'polyfill.mathml', function(require, module, exports) { var _=function(){var D={"en":{"disclaimer":"This website uses the standard <a href=\"https://www.w3.org/Math/\">MathML</a> to display mathematical formulas.<br/>Sadly, <b>your browser doesn't support it</b>. We will try to emulate MathML support, but it can be slow and memory consuming. We suggest you to install a browser with MathML support, <a href=\"https://www.mozilla.org/firefox/new/\">Firefox</a> is good choice."},"fr":{"disclaimer":"Ce site utilise le standard <a href=\"https://www.w3.org/Math/\">MathML</a> pour afficher les formules mathématiques.<br/>Malheureusement <b>votre navigateur ne le supporte pas</b>. Nous allons tenter d'émuler le MathML pour vous, mais nous vous suggérons d'utiliser un navigateur qui supporte ce standard du web, par exemple <a href=\"https://www.mozilla.org/firefox/new/\">Firefox</a>."}},X=require("$").intl;function _(){return X(D,arguments);}_.all=D;return _}();
    /****************************************
 Until now (february 2016), only Firefox and Safari support MathML.

 this polyfill  detects the  lack of MathML  support and  transform every
 MathML tag in some thing that vagueley looks like real MathML.
****************************************/


function hasMathMLSupport() {
  var div = document.createElement("div"), box;
  div.innerHTML = "<math><mspace height='23px' width='77px'/></math>";
  document.body.appendChild(div);
  box = div.firstChild.firstChild.getBoundingClientRect();
  document.body.removeChild(div);
  return Math.abs(box.height - 23) <= 1  && Math.abs(box.width - 77) <= 1;
}


if (!hasMathMLSupport()) {
  polyfill();
  console.warn("MathML is not supported! The polyfill will be activated.");
  var head = document.querySelector( "head" );
  var script = document.createElement( "script" );
  script.setAttribute(
    "src",
    "https://cdnjs.cloudflare.com/ajax/libs/mathjax/0.1/MathJax.js?config=TeX-MML-AM_CHTML"
  );
  head.appendChild( script );
  if( document.body.hasChildNodes() ) {
    var disclaimer = document.createElement("div");
    disclaimer.setAttribute( "id", "polyfill-mathml" );
    disclaimer.innerHTML = _("disclaimer");
    document.body.insertBefore( disclaimer, document.body.firstChild );
  }
} else {
  console.log("MathML is supported!");
}


function polyfill() {
  var mathmlNodes = document.querySelectorAll("math");
  var node;
  for ( var i=0 ; i<mathmlNodes.length ; i++ ) {
    node = mathmlNodes[i];
    node.parentNode.replaceChild( transform( node ), node );
  }
}


function transform(root) {
  var e = document.createElement("div");
  e.className = "math";
  e.innerHTML = root.innerHTML;
  return e;
}


  
module.exports._ = _;
/**
 * @module polyfill.mathml
 * @see module:$

 */
});